Upon impact, bicycle helmets compress, thus lowering the potentially dangerous acceleration experienced by the head. a new kind of helmet uses an airbag that deploys from a pouch worn around the rider’s neck. in tests, a headform wearing the inflated airbag is dropped onto a rigid platform; the speed just before impact is 6.0 m/s. upon impact, the bag compresses its full 12.0 cm thickness, slowing the headform to rest. what is the acceleration, in g’s, experienced by the headform?

-15.3g

Explanation:

We can find the acceleration by using the following SUVAT equation:

where:

v = 0 is the final velocity (the headform comes to rest)

u = 6.0 m/s is the initial velocity before the impact

d = 12.0 cm = 0.12 m is the distance covered during the impact

a is the acceleration

Solving for a, we get

Where the negative sign means it is a deceleration.

Now we know that

So we can express the acceleration in units of g:

a long strand of spaghetti is folded once. if this is cut 20 times, how many pieces of spaghetti will there be? a long strand of spaghetti is folded once. if this is cut 20 times, how many pieces of spaghetti will there be? a long strand of spaghetti is folded once. if this is cut 20 times, how many pieces of spaghetti will there be? a long strand of spaghetti is folded once. if this is cut 20 times, how many pieces of spaghetti will there be? a long strand of spaghetti is folded once. if this is cut 20 times, how many pieces of spaghetti will there be?

\

c. magnitude and direction